7y+4×8 = 8-5y+132 answer fast

What is the length of the missing leg in this right triangle? 18 mm 24 mm 26 mm 32 mm

Which of these numbers of simulations of an event would be most likely to produce results that are closest to those predicted by probability theory? 15, 20, 5, 10

In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?